Rolling-mill plant.



V. E. EDWARDS.

ROLLING MILL PLANT.

APPLIoATIoN FILED 111111.15, 1914.

Patented July 21, 1914.

I @Il @o The forward end of the link 21 is pivlotally attached to a connecting rod 22, which is actuated by a crank pin 23 on the face of a large gear wheel 24, suitably jour naled on and carried b the table 5. The gear :wheel 24.`meshesw1th 4and is driven by .al pinion 25` onw-thevshaft. ofanelectric motor 26 also supported by said table. t

The framework 3 carries upright standards 27 and 28 att eachy end, between which issecured*a@linearscajleff'29Y adaptedto'A indicate the length of a b'loom,xr.as hereinafterdescribed.

u i 'fJPVQd *thereto a lat-.c1130 disposed in thevpathfof the bloom,

normally. ...assumes the .position 'shown p. inthe l figure, .owing to 'thev` 'predominating weight ofits leftihand end, ybut which is` aeablaof reet-ingaat c1oelrwise-laireaian .tcfllermit, :the Lpassages of a; bloom lt'hereove'rl flQmzthe .furnace Vto .the .weighing mechanismQAfter the-bloom isinoved Vpast the with ftheedgelof its y,endl-31 in alinement with the zero., mark onthe yscale 29, as

Shown..in.theffiguref.il4 v The character A on the drawing represents, as avwhole, a dying shear located immediately beyond the last reducing or fmishing roll 2. lThe .operative 'parts of this mechanism are shown in section for the sake of r.clearne ss., 4 Their .particular construction forms no part of the resent invention, the shear shown in the rawing being essentially identical with that disclosed in Let- Aters Patent No. 505,512, granted to me September 26,1893, although any other form of -iying shear, well known in the art, might be used. Ihave also shown diagrammatically, mechanism for operating the shear, preferably a steam cylinder 32containng a piston adapted to impart a reciprocating movement to a cross head 33, which latter is connected by connecting rods 34 with the although "anyfsuitable valve mechanism mayv beused, since the particular type of valve mechanism' employed 'forms not.l part of the presentv invention. I have indicated this valve 4mechanism diagrammatcally at .35, adjacent the steam cylinder 32, 'and have shown in dotted lines -a valve 36, adapted when moved in one direction to exhaust` steam from the cylinder below the piston,

entto Carroll. ,y u y. V A, The mechanism for'operating the vvalve and adapted when returnedto its initial position, to restore the steam pressure below the piston, causing the latter to move back to its original position, 'such a valve, operating in the above described manner, being disclosed in the aforesaid Lett'ers Pat- 36 willV now be described. At jl suitable distance beyond the shearing ,mechanism land substantially in the path of 'the 'finished product as itl emerges from thenal .fin-- ishing rolls 2 onto an additional series of vconvcyer rolls 37, isrlocatedfa pair of stand-- ards 38, 39, supporting between them lthe `longitudinal guides. 40 for a slidablerblock catch 44 adapted to engage the notches in a segmental guide plate 45, projecting from the standard 39. Thelongitudinal position 'of the-block 41 on its guides 40 is controlled by the position into which the lever?` is `locked by .the catch 44,

as will be readily apparent.

Pivoted at 46, on the side ofthe block 41,

is a trigger 47, which takes the form of a bell crank lever having bent arms. The lower arm of the trigger extends directly into the path of the. finished rod as it vemerges from the reducing rolls 2 and is circuit is led to the insulated stop 48, and

the iother is in electrical connection with the trigger 47, so that with the trig in contact with the stop, as shown, the so enoid is kept energized. The solenoid has a core 51, to which is attached the stem of .the valve 36. When the end of the i'nished rod strikes the lower end of the trigger the circuit is broken owing to the movement .of the trigger away from'the stop, and the consequent denergization of the. solenoid permits theY operation of the valve .36 i. by gravityto exhaust vthe/steam from' below the piston in the cylinder 32, as described in the aforesaid Letters Patent to Carroll,y

thereby causing the .shear to operate inthe manner described in my aforesaid Letters Patent. The lateral removal of vthe sheared- .off rod permits the'triggery to 'resume its j normal position, again clos'- the circuit.

and energizing the solenoid, w 'ch 'acts on f the piston and returning thejshear in position to cut off the next rod.

The detailed operation of my mechanism is as follows z-'llhe bloom from the blooming mill or furnace is conveyed past the latch 30 onto the rolls 1 carried by the framework 3. The rotation of the conveyer rolls is then reversed, by means of suitable reversing mechanism, not shown, carrying the bloom rearwardly against the projecting end 31 of the latch 30, which stops its rearward movement. It the blooming mill is one in which blooms of uniform section are produced, the amount of metal in each bloom can be readily ascertained by merely measuring on the scale 29 the length of the bloom so held against the latch 30, with one end thereof in vertical alinement with the zero mark on said scale. llt, loweverthe blooms vary in cross section, t' e motor 26 is operated to turn the gear 24 sulicient to permit the upper arms of the bell cranks 20 to lift the bloom clear of the conveyor rolls, as shown in the figure, in which position its exact weight can be ascertained from the scale beam 16, in any well known manner. By reference to a table, or by a simple calculation, the proper length, ordinarily between 27. and 30 feet, into which the linished rods are to be cut, so as to secure'an even division of the metal contained` in the bloom,

with no remainder or short is ascertained,`

and the lever i3 is set in position to hold the lower end orp the trigger t7 l'at the redetermined distance from the shear. v T e bloom.`

is then lowered-onto the rolls 1 by reversing the rotation oi' the motor 26, 'and 1s forwarded by the said rolls, now rotating in. the proper direction, to the reducing 'rolls 2. The product emerging from the latter is automatically divided into billets of pre determined lengths by the `tlying shear A, as hereinbefore described.l The table of lengths is computed to allow for a predetermined length, say sia to ten, inches, of the advancing end of the rolled product to be removed or Foro ped before the auto-- matie division of t e samer into billets of predetermined. length is begun. Allowance is also made in computing said table, for a predetermined lengthV to be removed or cropped from the rear end of the rolled product. ln order to actuate the shear to remove this so called crop end, the upper arm of the trigger 4:7 is extended to form a handle 52 by means of which the trigger is adapted to be manually thrown forward at the moment when the aforesaid predetermined length at the. advancing end ot the finished product projects beyond the shear blades. The trigger then returns, by grav-v ity, to its normal osition, in readiness to be struck by the a vancing end of the first rod to be cut, in the manner previously described.

ll claim,

1. lin a rolling mill apparatus, the combination of means for ascertaining 'the' amount ot metal in a bloom to be rolled, means for rolling said bloom to a predetermined size, and means for cutting the rolled product into equal lengths without yremainder, or short, as predetermined by the amount of metal in'said bloom. v

2. lin a rolling mill apparatus, means for weighing a bloom, means for rolling said weighed bloom to a predetermined cross section, and means for cutting the rolled product into equal sections of a length proportionate with the weight of the bloom.

3. ln a rolling mill apparatus, means for ascertaining the amount of metal in a bloom, means for continuousl into a. product or' pre etermincd 'cross section, 'and means-torv successively cutting said yproduct as it emerges from said rolling means into a plurality otbillets of equal length, the amount ometa'l in all of said billets being equal tothe amount of metal in said bloom.

4f. ln a rolling mill ap weighing a bloom, a series of reducing rolls into which' the bloom is introduced, after leaving said weighing means, a shearing mechanism for dividing the product emerging from said reducing rolls, andmeans for operating said shearing mechanism to divide the-product into equal lengths without rcm'ainder ,or short.

5. lin a rolling mill apparatus, means for ascertaining the amount oit' metal in a bloom, means for rolling said bloom to. a predetermined cross section, a shearing mechanism adjusted in accordance with the yamount of metal in said bloom to cut the rolled product into billets of equal length, and means, aetuated by engagement therewith of the rolled product, for operating said shear.

6. lin a rolling mill apparatus, a series of conveyer rolls for movlng a-bloom, means for interrupting thepass'age of said bloom over said eonveyer rolls, means for ascertaining the amount `of metal in said bloom during said interruption, a series of reducing rolls adapted to receive each bloom from said conveyer rolls, and means for dividing the rolled product .of each bloom emerging from said reducing rolls into sections of equal length, said length predetermined from the amount of metal in said bloom.

7. lin a rolling mill apparatus, a billet mill, means for conveying a bloom to said billet mill, means for cutting the rolled product into sections of predetermined length as it emerges from said billet mill, and means in the path ont said bloom over said conveying means for ascertaining the amount ot metal in said bloom prior to its passage trom said conveying means to said illet mill.

paratus, means for rolling said bloom lill@ 8. In a rolling mill apparatus, a series of of'metal in said bloom during rits pamage convcyer rolls for delivering a bloom to a over said.c0nveyerrolls.' .10 billet mill, a, series of reducing rolls Aadapted Dated this ninth day of Aprll, 1914. to receive seid bloom from said conveyer VICTOR EDWARDS rolls, means for cutting the rolled product of said bloom into sections of predetermined Witnesses: length as it emerges from said reducing WILLABD A. WINN, rolls, and means for ascertaining the amount FRANK M. LORD. 

